Socket device



C. L. KNUTSON SOCKET DEVICE Jan. 23, 1934.

Filed May 5, 1931 Car-Z L. K312156022 eeiehieei rep. 2c, 1934 h ll I sooner nhvicii Carl L. Knutson, Maywood, Ill., assignor to Cinch Manufacturing Eorporation, Chicago, Ill, a corporation of Illinois Application May 5, 1931. Serial No. 535,146

1 Claim. (Gl. 173-328) My invention aims to provide improvements It has been found that objectionable noises in socket devices for radio tubes and the like. have been present in radio and like apparatus In the drawing which'illustrates a preferred due to electrical leaks or spark jumps from one embodiment of my invention:- terminal member to another terminal member gu 1 is a plan view of a preferred embodiin radio sockets having a series of terminal memp0 ment of a socket member, parts thereof bein bers relatively closely arranged as a part of the illustrated by dotted lines; socket device. I have also found that in prac- Fig. 2 is an enlarged section taken on the line tice there has been some difiiculty encountered 22 of Figure 1; and in connection with the types of devices under Fig. 3 is a section taken on the line 3--3 of consideration due to the fact that one or more 5 g. 2. of the terminal members might be partially ro- While I have illustrated in the drawing one tated thereby bringing some portion thereof into embodiment of my invention, it should be undercontact with an adjacent terminal member, thus stood that my invention may be used in conne ccausing a short circuit. In order to overcome tion with various types and constructions of r the objections mentioned herein, I have provided 70 socket members for similar purposes. a third insulating member 10 which in the struce S et ber illustrated has a pair. of ture illustrated is located between the plates 1 plate members of thin insulating material (Fig. and 3' and is secured in position against rota- 2), one of which I shall term a base plate 1 havtion by the rivet 9. The member 10 is provided ing a series of apertures. 2 formed therein and with a number of radial arms 11 each of which 7 arranged in a circle at a spaced distance from may be of a width substantially equal to the the center of the base plate 1. The other plate distance between the terminal members, as member may be termed a bottom plate 3 and it clearly illustrated in Figs. 1 and 3. While the also has aseries of'apertures 4 which are-aligned member 10, as shown in the d is Starwith the apertures 2 in the base plate 1. ed. it s d be understood that the shape so 1 etween the plate members 1 and 3 I ha of the device may be varied in accordance with secured terminal members 5 of any suitable cont typ of s t structure to which t is t be struction for alignment with the apertures 2 and pp 4, so that they may receive and make Contact, Since the arms 11 are of insulating material with the prongs presented by a radio tube or they m spa i means w ich pr v t contact likeniember (not hown), Th terminal between the terminal members 5 if one or more bers 5 illustrated in the drawing are substan- Ofthem is accidentally turnedth tially the same a th e m fully in t t the arms 11 insulate the terminal members 5 one 'and described in the co-pending application of from the other. e y e v y p ent n 35 Arthur W. Kimbell, Serial No. 375.924, filed ui electrical leeks a d spa ks jumps f m one to 5, 1929. These termin l members 5 h bthe other. This will be readily understood when stantially tubular portions 6 extending from consideration is given to the fact that one terbases '1 located between the plate members 1 minal member may be connected to a p v and 3 through the apertures 4 in the bottom plate supply of ty, while t adja t terminal 40 3, as clearly illustrated in Fig. 2. The plate memmember m y be nn cted'to a neg v pp bers 1 and 3 are preferably spaced from e ch of electricity, and since in many cases the metallic other by spacing means 8 (shown in dotted lines, p t of e term members a e relatively Fig. 2) so that the tubular portion 6 of each closely rra it is pp nth t ther is a contact member may expand and contract withtendency for electricity to be attracted from one 45 out interference from the plate member 3. terminal" m r t t t thus aus The base plate 1 and the bottom plate 3 are pa jumps unless some insulating means is secured together by means of the tubular rivet p v b t the ja portions of the 9 rectangular in cross-section (Figs. 2 and 3) so terminal members. While these "spa k j that the parts are held against accidental relay hot-006111 at Such frequent intervals as 1701m- 50 tive rotation. pair the operation of a device with which the The socket structure thus far described is in socket member is associated, nevertheless in conmost respects substantially the same as the apnection with radio apparatus these p plication referred to above and is merely for the jumps cause noises in the circuits which are purposes of a clear understanding of my invenaudible in the reproducer. 55 tion which I shall now proceed to describe. My invention is particularlv applicable to socket members of the type illustrated and described wherein two relatively thin plates are used and are spaced from each other and also for sockets which include only a'single plate beneath which the terminal members are attached, the bottom plate 3 being omitted.

While I have illustrated and described a preferred embodiment of my invention I do not wish to be limited thereby, because the scope of my invention is best defined by the following claim.

I claim: i

A socket for use with radio tubes and the like comprising, in combination, two relatively thin spaced platesof insulating material each having a number of apertures aligned with the apertures ofthe other and arranged in circles about the centers of said plates, contact-receiving members having flange portions assembled between said plates in alignment with said apertures and other portions extending through one of said plates and a third star-shaped plate of insulating material secured between said spaced apertured, plates and having portions extending between those portions of said terminal members between said plates for the purposes described.

CARL L. SON. 

